NetBSD/sys/arch/amiga/dev/a2kbbc.c

254 lines
6.4 KiB
C

/* $NetBSD: a2kbbc.c,v 1.10 2000/03/15 20:40:00 kleink Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah $Hdr: clock.c 1.18 91/01/21$
*
* @(#)clock.c 7.6 (Berkeley) 5/7/91
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <machine/psl.h>
#include <machine/cpu.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/custom.h>
#include <amiga/amiga/cia.h>
#include <amiga/dev/rtc.h>
#include <amiga/dev/zbusvar.h>
#include <dev/clock_subr.h>
int a2kbbc_match __P((struct device *, struct cfdata *, void *));
void a2kbbc_attach __P((struct device *, struct device *, void *));
struct cfattach a2kbbc_ca = {
sizeof(struct device), a2kbbc_match, a2kbbc_attach
};
void *a2kclockaddr;
int a2kugettod __P((struct timeval *));
int a2kusettod __P((struct timeval *));
int
a2kbbc_match(pdp, cfp, auxp)
struct device *pdp;
struct cfdata *cfp;
void *auxp;
{
static int a2kbbc_matched = 0;
if (!matchname("a2kbbc", auxp))
return (0);
/* Allow only one instance. */
if (a2kbbc_matched)
return (0);
if (/* is_a1200() || */ is_a3000() || is_a4000()
#ifdef DRACO
|| is_draco()
#endif
)
return (0);
a2kclockaddr = (void *)ztwomap(0xdc0000);
if (a2kugettod(0) == 0)
return (0);
a2kbbc_matched = 1;
return (1);
}
/*
* Attach us to the rtc function pointers.
*/
void
a2kbbc_attach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
printf("\n");
a2kclockaddr = (void *)ztwomap(0xdc0000);
ugettod = a2kugettod;
usettod = a2kusettod;
}
int
a2kugettod(tvp)
struct timeval *tvp;
{
struct rtclock2000 *rt;
struct clock_ymdhms dt;
time_t secs;
int i;
rt = a2kclockaddr;
/*
* hold clock
*/
rt->control1 |= A2CONTROL1_HOLD;
i = 0x1000;
while (rt->control1 & A2CONTROL1_BUSY && i--)
;
if (rt->control1 & A2CONTROL1_BUSY)
return (0); /* Give up and say it's not there */
/* Copy the info. Careful about the order! */
dt.dt_sec = rt->second1 * 10 + rt->second2;
dt.dt_min = rt->minute1 * 10 + rt->minute2;
dt.dt_hour = (rt->hour1 & 3) * 10 + rt->hour2;
dt.dt_day = rt->day1 * 10 + rt->day2;
dt.dt_mon = rt->month1 * 10 + rt->month2;
dt.dt_year = rt->year1 * 10 + rt->year2;
dt.dt_wday = rt->weekday;
/*
* The oki clock chip has a register to put the clock into
* 12/24h mode.
*
* clockmode | A2HOUR1_PM
* 24h 12h | am = 0, pm = 1
* ---------------------------------
* 0 12 | 0
* 1 1 | 0
* .. .. | 0
* 11 11 | 0
* 12 12 | 1
* 13 1 | 1
* .. .. | 1
* 23 11 | 1
*
*/
if ((rt->control3 & A2CONTROL3_24HMODE) == 0) {
if ((rt->hour1 & A2HOUR1_PM) == 0 && dt.dt_hour == 12)
dt.dt_hour = 0;
else if ((rt->hour1 & A2HOUR1_PM) && dt.dt_hour != 12)
dt.dt_hour += 12;
}
/*
* release the clock
*/
rt->control1 &= ~A2CONTROL1_HOLD;
dt.dt_year += CLOCK_BASE_YEAR;
if (dt.dt_year < STARTOFTIME)
dt.dt_year += 100;
if ((dt.dt_hour > 23) ||
(dt.dt_day > 31) ||
(dt.dt_mon > 12) ||
/* (dt.dt_year < STARTOFTIME) || */ (dt.dt_year > 2036))
return (0);
secs = clock_ymdhms_to_secs(&dt);
if (tvp) {
tvp->tv_sec = secs;
tvp->tv_usec = 0;
}
return (1);
}
int
a2kusettod(tvp)
struct timeval *tvp;
{
struct rtclock2000 *rt;
struct clock_ymdhms dt;
int ampm, i;
time_t secs;
secs = tvp->tv_sec;
rt = a2kclockaddr;
/*
* there seem to be problems with the bitfield addressing
* currently used..
*/
if (! rt)
return (0);
clock_secs_to_ymdhms(secs, &dt);
/*
* hold clock
*/
rt->control1 |= A2CONTROL1_HOLD;
i = 0x1000;
while (rt->control1 & A2CONTROL1_BUSY && i--)
;
if (rt->control1 & A2CONTROL1_BUSY)
return (0); /* Give up and say it's not there */
ampm = 0;
if ((rt->control3 & A2CONTROL3_24HMODE) == 0) {
if (dt.dt_hour >= 12) {
ampm = A2HOUR1_PM;
if (dt.dt_hour != 12)
dt.dt_hour -= 12;
} else if (dt.dt_hour == 0) {
dt.dt_hour = 12;
}
}
rt->hour1 = (dt.dt_hour / 10) | ampm;
rt->hour2 = dt.dt_hour % 10;
rt->second1 = dt.dt_sec / 10;
rt->second2 = dt.dt_sec % 10;
rt->minute1 = dt.dt_min / 10;
rt->minute2 = dt.dt_min % 10;
rt->day1 = dt.dt_day / 10;
rt->day2 = dt.dt_day % 10;
rt->month1 = dt.dt_mon / 10;
rt->month2 = dt.dt_mon % 10;
rt->year1 = (dt.dt_year / 10) % 10;
rt->year2 = dt.dt_year % 10;
rt->weekday = dt.dt_wday;
/*
* release the clock
*/
rt->control2 &= ~A2CONTROL1_HOLD;
return (1);
}